000 00338nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a678-477
_bRIN-B1
100 _aCotter, Robert J
245 0 _aRing forming polymerizations. Pt B1. Heterocyclic rings
260 _aNew York
_bAcademic
_c1972
700 _aMatzner, Markus
942 _cBK
999 _c24797
_d24797